Surveillance video shows moments before woman shot outside her home in Tomball

TOMBALL, Texas (KTRK) -- Police are searching for the person who walked up to a woman and shot her at point-blank range, while she was standing in her driveway.

The Harris County Precinct 4 Constable's Office responded to reports of a shooting in the 8600 block of Cedar Walk Drive around 7:30 a.m.

Surveillance video shows the suspect walking up to the woman, who was setting up for a garage sale in her driveway and shooting her four times. The shooter then turns and runs off to a vehicle and drives away.

Neighbor Candy Ellis heard the gunshots and called 911.

"Three gunshots, rapid-fire, then wait another second or two, and then another gunshot," said Ellis.

Detectives are closely examining the video in hopes of determining the type of truck the shooter was in.

"Video is always important. It certainly gives us a starting point," said Lt. Jeff Stauber, Harris County Sheriff's Office.

Friends and loved ones can't understand why anyone would do this. The 29-year-old victim's mother-in-law was in shock.